Step 1

Sift Confectioners' Sugar - Using a mesh sifter, sift the confectioners' sugar to remove any clumps. This will help ensure that your frosting will have a smooth texture.

Step 2

Beat the Butter and Cream Cheese - In a large bowl using an electric mixer, beat the butter and cream cheese at medium speed. Beat them until they are fully combined and become smooth and creamy. If needed, scrape down the sides of the bowl with a rubber spatula to ensure the ingredients fully mix together.

Step 3

Add the Rum - With the mixer now on low speed, add the rum. Add 5-6 tablespoons, depending on how strong you want the rum flavor to be.

Step 4

Add the Confectioners' Sugar - Gradually add in the confectioners' sugar into the mixture. Beat at low speed for about 30 seconds to avoid the sugar from getting everywhere before beating at high speed. Beat the cream cheeses frosting until it is smooth and creamy, scraping down the sides of the bowl as needed.